The mighty repair kit! A heavy-duty plastic patch that rebuilds and repairs holes, cracks, and dents. Material handles like putty, hardens like steel, and sands like wood. Self-hardening material is great for repairs to damaged and leaky hulls, cracked crank cases, engine blocks, fuel tanks, water tanks, piping, and even food containers. Formula provides adhesive and barrier coat for mounting anodes on ships. Impervious to oil, grease, brine, detergents, and other chemicals onboard. Will not shatter when bumped. Nonmagnetic and noncorrosive. Can be sanded, drilled, sawed, threaded, and painted after drying.